The state’s trial lawyers have spent a whopping $20 million lobbying and donating to the campaigns of state pols since 2006 to block reforms that could cut the high cost of doing business in New York, according to an anti-trial lawyer group.

The Lawsuit Reform Alliance of New York plans to release a report today detailing more than $6.3 million in lobbying and $14.6 million in campaign contributions by New York’s major trial lawyer groups and individual attorneys and firms.

Trial lawyers gave the max to state Assembly Democrats’ fund-raising arm and the central campaign committee of the party controlling the Senate in each of the last seven years, a copy of the report obtained by The Post shows.

Alliance executive director Tom Stebbins said trial lawyers have profited handsomely while driving up the cost of doing business in New York by blocking needed reforms to provisions such as the “scaffold law,” which holds contractors and property owners fully liable no matter what if workers are hurt in falls from heights under unsafe conditions.

New York State Trial Lawyers Association president Michael Jaffe said his group is “proud to fight for … the victims whom the corporate interests behind this report are spending many tens of millions of their profits to stop from ever having their day in court.”

While the reform alliance provided data showing trial lawyers’ campaign contributions were tops among influence blocs, the New York Public Interest Research Group put teacher unions far in the lead in combined lobbying and campaign donations.